protected additionally RCD
d. everyone may work ‘live’
b. overcurrent protection
b. The Electricity Work Regulations state that:
a. polarity test. functional test
d.
24.
26.
21.
20. IPX7 protection
d.
23. All final circuits bathroom, both power and lighting, must have:
a. earth fault loop impedance
c. Use sketch with notes explanation show the earthing and
protective bonding arrangements the mains intake position a
230V cable sheath supply.
27. Zone protection. one may work ‘live’
c. only instructed and skilled people may work ‘live’. Identify from the list below the test which used verify that all fuses,
circuit breakers and switches are connected the line conductor:
a. Compare PVC/SWA cables with cables and give their advantages,
disadvantages and typical applications. only competent people may work ‘live’
d. RCD protection
c. buried depth 600mm. the industrial type
b. continuity test
b.
25. Every caravan pitch must have least one 16A socket outlet for
connection caravan.
. Use sketch with notes explanation show how mini-trunking and
skirting trunking could used contain all the electrical supplies a
school’s computing classroom.365
U W
6 6
2 2
C1
L1 C1
2
C3
4
5
6
To phase supply
To phase motor
19.
22. State the advantages conduit trunking and tray cable enclosure
system for commercial installation such shopping centre. Use sketch with notes explanation show the earthing and
protective bonding arrangements the mains intake position a
230V system. protected from overcurrent
c. The socket outlet must be:
a
